Valve debuted a new game at Dota 2’s 2017 championship, The International, today. Called Artifact: The Dota Card Game, it’s a collectible card game (CCG) set in the Dota 2 world, and will release sometime in 2018. Valve didn’t share many details on the game but the early description sounds pretty complicated. There are three boards, and mechanics include lanes, creep and barrack building.